OK....well talking from our FASS system side of things...get me a fuel pressure of our system. I don't see how we could cause a RPM fluctuation unless our system is just not getting fuel to the CP3. Check for codes...im sure if its something that the ECM controls that is messing up, there would be a code stored.
On the fitting on the CP3 on the Engine, check to see if its tight. ALSO check to see if you didnt pinch the o-ring on the install.
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Dan MacDonald
www.FASSRide.com
2001 2500, 4x4, Con OFEed, TBK, AFE Stage II kit W/ prefilter and 4" cowl mod. , FASS 150/150, Mach 2's, Drag Comp,
Currently running on B-100
'02 Jetta TDI 5 Speed "Mini Me" 45-50 MPG